Sub-Mariner was one of Marvel's first super-heroes in the 1940s. He was brought back as a character and received his first series starting in Tales to Astonish (1959 series) #70. He stories continued in Tales to Astonish through issue #99. Then, Marvel published one issue of "Iron Man & Sub-Mariner" before Sub-Mariner received his own title, "Sub-Mariner (1968 series).